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website/functions/node_modules/traverse/test/lib/deep_equal.js

@@ -0,0 +1,96 @@
+var traverse = require('../../');
+
+module.exports = function (a, b) {
+    if (arguments.length !== 2) {
+        throw new Error(
+            'deepEqual requires exactly two objects to compare against'
+        );
+    }
+    
+    var equal = true;
+    var node = b;
+    
+    traverse(a).forEach(function (y) {
+        var notEqual = (function () {
+            equal = false;
+            //this.stop();
+            return undefined;
+        }).bind(this);
+        
+        //if (node === undefined || node === null) return notEqual();
+        
+        if (!this.isRoot) {
+        /*
+            if (!Object.hasOwnProperty.call(node, this.key)) {
+                return notEqual();
+            }
+        */
+            if (typeof node !== 'object') return notEqual();
+            node = node[this.key];
+        }
+        
+        var x = node;
+        
+        this.post(function () {
+            node = x;
+        });
+        
+        var toS = function (o) {
+            return Object.prototype.toString.call(o);
+        };
+        
+        if (this.circular) {
+            if (traverse(b).get(this.circular.path) !== x) notEqual();
+        }
+        else if (typeof x !== typeof y) {
+            notEqual();
+        }
+        else if (x === null || y === null || x === undefined || y === undefined) {
+            if (x !== y) notEqual();
+        }
+        else if (x.__proto__ !== y.__proto__) {
+            notEqual();
+        }
+        else if (x === y) {
+            // nop
+        }
+        else if (typeof x === 'function') {
+            if (x instanceof RegExp) {
+                // both regexps on account of the __proto__ check
+                if (x.toString() != y.toString()) notEqual();
+            }
+            else if (x !== y) notEqual();
+        }
+        else if (typeof x === 'object') {
+            if (toS(y) === '[object Arguments]'
+            || toS(x) === '[object Arguments]') {
+                if (toS(x) !== toS(y)) {
+                    notEqual();
+                }
+            }
+            else if (toS(y) === '[object RegExp]'
+            || toS(x) === '[object RegExp]') {
+                if (!x || !y || x.toString() !== y.toString()) notEqual();
+            }
+            else if (x instanceof Date || y instanceof Date) {
+                if (!(x instanceof Date) || !(y instanceof Date)
+                || x.getTime() !== y.getTime()) {
+                    notEqual();
+                }
+            }
+            else {
+                var kx = Object.keys(x);
+                var ky = Object.keys(y);
+                if (kx.length !== ky.length) return notEqual();
+                for (var i = 0; i < kx.length; i++) {
+                    var k = kx[i];
+                    if (!Object.hasOwnProperty.call(y, k)) {
+                        notEqual();
+                    }
+                }
+            }
+        }
+    });
+    
+    return equal;
+};